The crop circle pictured above appeared
suddenly and mysteriously near Stonehenge one day in July 1996 in
broad daylight. A pilot flew over the field at 5:45 pm and saw nothing
out of the norm. A gamekeeper and security guard also noted nothing
unusual in the field at 5:30pm, yet by 6:00pm a huge crop
formation was being spotted by passing tourists. The formation was a
915 foot spiral of 151 circles that form a complex pattern across the
field. This crop circle appeared out of nowhere
on a busy A303 road. This formation happened
sometime within a 15 - 20 minute time frame, and on a sunny afternoon
in the English coutryside, thus demonstrating that not all crop circles
appear at night, as was previously thought. See Lucy
Pringle's website

Many people think that crop circles have been explained away as hoaxes,
having been made by eccentric individuals with rollers or planks
attached to ropes. Researchers can tell the difference between a hoaxed
crop circle and one that is unexplained. The most unusual aspect of the
unexplained crop circle is that the stems of the plant are
neither cut or crushed, and the wheat or barley stems are bent at an
angle. The grain stems are actually folded close to the ground and lie
horizontally in one direction. These bends are 2 - 3 centimeters
above the ground.

To date, no one has determined the cause of crop circles, and they
remain one of the mysteries of our often puzzling world. Some speculate
that they are caused by plasma or magnetic fields, gravity
fluctuations, or intellegent beings from an interdimensional realm.